personaction.java

关于企业人员管理的struts应用样例

package org.appfuse.webapp.action;

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import org.appfuse.Constants;
import org.appfuse.model.Person;
import org.appfuse.service.PersonManager;
import org.appfuse.webapp.form.PersonForm;

/**
 * @struts.action name="personForm" path="/editPerson" scope="request"
 *  validate="false" parameter="method" input="mainMenu"
 *
 * @struts.action name="personForm" path="/savePerson" scope="request"
 *  validate="true" parameter="method" input="edit"
 *
 * @struts.action-forward name="edit" path="/WEB-INF/pages/personForm.jsp"
 * @struts.action-forward name="list" path="/WEB-INF/pages/personList.jsp"
 */
public final class PersonAction extends BaseAction {
    public ActionForward cancel(ActionMapping mapping, ActionForm form,
                                HttpServletRequest request,
                                HttpServletResponse response)
    throws Exception {
        return mapping.findForward("viewPeople");
    }

    public ActionForward delete(ActionMapping mapping, ActionForm form,
                                HttpServletRequest request,
                                HttpServletResponse response)
    throws Exception {
        if (log.isDebugEnabled()) {
            log.debug("Entering 'delete' method");
        }

        ActionMessages messages = new ActionMessages();
        PersonForm personForm = (PersonForm) form;

        // Exceptions are caught by ActionExceptionHandler
        PersonManager mgr = (PersonManager) getBean("personManager");
        mgr.removePerson(personForm.getId());

        messages.add(ActionMessages.GLOBAL_MESSAGE,
                     new ActionMessage("person.deleted",
                                       personForm.getFirstName() + ' ' +
                                       personForm.getLastName()));

        // save messages in session, so they'll survive the redirect
        saveMessages(request.getSession(), messages);

        return mapping.findForward("viewPeople");
    }

    public ActionForward edit(ActionMapping mapping, ActionForm form,
                              HttpServletRequest request,
                              HttpServletResponse response)
    throws Exception {
        if (log.isDebugEnabled()) {
            log.debug("Entering 'edit' method");
        }

        PersonForm personForm = (PersonForm) form;

        // if an id is passed in, look up the user - otherwise
        // don't do anything - user is doing an add
        if (personForm.getId() != null) {
            PersonManager mgr = (PersonManager) getBean("personManager");
            Person person = mgr.getPerson(personForm.getId());
            personForm = (PersonForm) convert(person);
            updateFormBean(mapping, request, personForm);
        }

        return mapping.findForward("edit");
    }

    public ActionForward save(ActionMapping mapping, ActionForm form,
                              HttpServletRequest request,
                              HttpServletResponse response)
    throws Exception {
        if (log.isDebugEnabled()) {
            log.debug("Entering 'save' method");
        }

        // Extract attributes and parameters we will need
        ActionMessages messages = new ActionMessages();
        PersonForm personForm = (PersonForm) form;
        boolean isNew = ("".equals(personForm.getId()));

        if (log.isDebugEnabled()) {
            log.debug("saving person: " + personForm);
        }

        PersonManager mgr = (PersonManager) getBean("personManager");
        Person person = (Person) convert(personForm);
        mgr.savePerson(person);

        // add success messages
        if (isNew) {
            messages.add(ActionMessages.GLOBAL_MESSAGE,
                         new ActionMessage("person.added",
                                           personForm.getFirstName() + " " +
                                           personForm.getLastName()));

            // save messages in session to survive a redirect
            saveMessages(request.getSession(), messages);

            return mapping.findForward("viewPeople");
        } else {
            messages.add(ActionMessages.GLOBAL_MESSAGE,
                         new ActionMessage("person.updated",
                                           personForm.getFirstName() + " " +
                                           personForm.getLastName()));
            saveMessages(request, messages);

            return mapping.findForward("edit");
        }
    }

    public ActionForward search(ActionMapping mapping, ActionForm form,
                                HttpServletRequest request,
                                HttpServletResponse response)
    throws Exception {
        if (log.isDebugEnabled()) {
            log.debug("Entering 'search' method");
        }

        PersonManager mgr = (PersonManager) getBean("personManager");
        List people = mgr.getPeople(null);
        request.setAttribute(Constants.PERSON_LIST, people);

        // return a forward to the person list definition
        return mapping.findForward("list");
    }
}